ENV3105 Hydrology Assignment 2

Assignment 2

Due date:       04 October 2022

Weighting:   25% (250 marks)

1. Overview

This assessment is designed to test your achievement of selected learning objectives of Modules 6 to 9. In particular, the assignment involves estimation of urban design discharges, reservoir routing and water balance. It is intended to reinforce and extend your knowledge on urban hydrology, using a low density residential subdivision as a case study.

The assignment is divided into three parts:

  • Part 1 – Reservoir Routing.
    • Part 2 – Estimation of Minor and Major design flows for the urban subdivision
    • Part 3 –Water balance analysis .

Part-1: Reservoir Routing

A hypothetical project has been devised to demonstrate how hydrology may be incorporated in engineering practice. Although the project is hypothetical, the various hydrological tasks that are included in the project are representative of what you may encounter after you graduate.

The following is the scope of Part-1 and Part-3 with two separate exercises:

  • An investigation of the hydrological impact of the proposed onstream weir on downstream riparian habitats.
  • A preliminary water balance analysis of the proposed off-stream aquaculture pond to determine if acceptable water levels can be maintained by Caboolture River streamflows

Hydrological impact of the onstream weir

Description of impact analysis

An Environmental Impact Assessment is required to gain approval for construction of the diversion weir. Discussions with relevant authorities and an aquatic scientist working on the project team suggest that an initial analysis should be performed to quantify the likely hydrological impact of riparian habitats downstream of the proposed weir. The main outcomes of the discussions were:

  • The initial analysis can be based on a most recent flood event of February 2022 recorded in the Upper Caboolture River should be used for this purpose
  • To assess the potential ecological impact of the proposed weir, the aquatic scientist requested responses to the following questions:
    • Would the peak discharge during the selected representative flood significantly change after the weir is built?
    • Would the weir significantly prolong the duration of flood inundation of the downstream habitat?

To assist the aquatic scientist, you are tasked with undertaking a reservoir routing analysis to estimate how the February 2022 flood hydrograph may change due to the proposed weir.

Useful materials for impact analysis

A detailed topographic survey of the Upper Caboolture River at the weir site was prepared. From this information, the volume of water able to be stored upstream of the weir at different elevations were computed.  The details are:

  Elevation (mAHD)Storage Volume (ML)

For the purpose of the initial hydrological analysis, it was decided that the preliminary weir configuration is of 35m long with a crest elevation of 76.0 mAHD. The initial level at the start of the event is considered as 63m.

Methodology for impact analysis

It is recommended that you undertake the following activities to initially evaluate the hydrological impact of the proposed weir:

  • Setup an EXCEL spreadsheet to make the necessary reservoir routing computations
  • Determine an elevation – storage volume relationship for the proposed weir pondage. It is acceptable to fit a regression equation to the data that has been provided.
  • Determine an elevation- outflow discharge relationship based on the weir flow equation for the adopted weir configuration
  • Compute a lookup table needed for the reservoir routing analysis
  • Undertake the reservoir routing analysis for the February 2022 flood hydrograph. Report the effect of the proposed weir in terms of change in peak discharge and inundation duration.
  • Document your analysis in the report.

Part-2: Estimation of Minor and Major design flows for the urban subdivision

Proposed Amberley residential subdivision

A drainage scheme is to be designed for a 28 lot residential located at Amberley, near the city of Ipswich, Queensland. A copy of the subdivision layout plan can be downloaded from Studydesk (Subdivision Lots Layout.pdf). The subdivision includes a network of proposed internal roads (Roads 02, 03 and 04).

Your task is to prepare a Minor system design check of the stormwater system upstream and including Pit 04/01 based on the preliminary layout and then a Major system check. The Minor system is to cater for the 2 year ARI storm and the Major system for the 100 year ARI storm. The system includes stormwater line 1 (pits 01/01 to 04/01) and line 2 (pits 01/02 and 02/02).

Pits will be based on Brisbane City Council standard drawings. Initial surface levels at pit locations are given in Table 1.

Table 1: Initial design details at pit locations

Pit/LocationFinished Surface Level (m LD)

LD = Local datum

Use the following information:

  1. The location of the subdivision is 27.62° S, 152.66° E
  2. The road kerbs are BCC ‘Type D’ kerb and channel. Roads 03 and 04 will have a 6.5m wide road pavement (kerb to kerb). The width of Road 02 is 8m. All roads have a dual crossfall of 1:30 (i.e. roadway has a central crown).   Assume the road reserve is 50% impervious.
  3. Assume all road pits will be 2400 lintel ‘lip in line’. The pits along Road 02 are on grade and all other pits are in sag. Sag pits have different hydraulic capacities compared to on grade pits due to the effect of water ponding.
  4. The proposed lots will be developed to ‘low density residential’ with an expected percentage impervious within the lot area of 60%.
  5. Soil permeability can be classed as ‘Medium’. Pervious parts of the subdivision can be classed as ‘Medium density bush’ or “Good grass cover’.
  6. Assume no flow of stormwater runoff into lots from neighbouring lots (i.e no flow across shared lot boundaries). Once flow meets an internal shared lot boundary, assume ‘concentrated overland flow’ conditions. Assume flows across lot boundaries to the street can occur. Use the contours shown on the layout plan to identify the subcatchment boundaries draining to each pit. This may mean that the full area of some lots may not drain to the nominated pits.
  7. To simplify the analysis, assume that there is no stormwater entry to Roads 02, 03 and 04 from external areas outside of the proposed subdivision. It is assumed that there is existing drainage to service the existing main road on the eastern entry to the subdivision. The catchment boundary shown as the red line on the subdivision layout plan can be used on this basis.
  8. The minimum travel time to a pit is 5 minutes and the maximum is 20 minutes. Reminder: Partial Area check is based on the most remote, directly connected impervious area to the pit. The travel time may be longer than 5 minutes.
  9. In completing the Hydrologic Design Sheets, it is acceptable to combine together lot subcatchments that have the same fraction impervious, rather than report CA values for individual lots.
  10. It is acceptable to scale up the CA values based on the frequency factor ratio F100/F2– this will simplify the calculations for the Major Storm analysis
  11. Do not use standard inlet times
  1. For pipe flow travel times for Sheet 2, use a minimum pipe gradient of 0.3% otherwise the road slope.
  2. Gutter flows in the street during the Minor storm should be contained within the full roadway width with zero depth at the crown. The maximum flow depth at the road kerb during the Major storm should contain flooding to within the road reserve. This corresponds to a maximum water depth of 0.25m. dV product should not exceed 0.6 m2/s. At the sag pits, check both the ponded water width at the pit and the roadway flow hazard approaching the pit during the Minor Storm.
  3. Unless otherwise defined, the drainage design check will be in accordance to the 2017 edition Queensland Urban Drainage Manual which can be accessed from UniSQ library through ezproxy link. Suitable AR&R IFD data can be used to generate design rainfall intensities.
  4. Undertake the Major design flow check for Road 02 at just downstream of pit 04/01.

Scope of Part-2

The scope of Part 2 is to undertake a Minor and Major analysis of the proposed drainage system by completion of Hydrologic Design Sheets 1, 2 and 3 (as per Module 7 of the Study Book).

After completion of the Design Sheets, review the results and make suggestions on revisions to the proposed road drainage system (e.g. requirement for additional pits, if any). It is not required to reanalyse and update the Design Sheets.

The design sheets shall be supported by:

  1. A plan showing the boundaries of each pit subcatchment and the flowpath to each pit used in the time of concentration calculation.
  2. Design assumptions (refer to report template)
  3. A worked example of how an (arbitrarily) selected row of each design sheet was determined, by providing the calculations in more detail.
  4. An output summary – giving the pit size at each pit location, the Minor discharge in each pipe reach and the Major flow characteristics (discharge, flow width, dV product) at the selected road location.

Useful Material for Part-2

The following materials have been provided and can be downloaded from StudyDesk or from external websites:

  • Subdivision layout base plan
  • Final QUDM can be downloaded from Studydesk
  • Refer to Bureau of Meteorology website for online IFD tool for design rainfalls.

Part-3: Water balance analysis of a pond

Description of water balance analysis

Your next major task is to undertake a water balance analysis of a pond. For the purpose of the analysis, the following pond configuration applies:

  • A trapezoidal-shaped pond with base dimensions of 200m long by 100m wide. Assume that the pond base is flat.
  • The pond embankment has an internal batter of 2H:1V on all sides.
  • The maximum water depth in the pond is 2m.

A relatively constant water level in the pond is considered desirable for silver perch growth. Below a critical water level of 1.5m, the pond would need to be ‘topped up’ from an alternative water supply at considerable expense. Thus, to establish the overall viability of the aquaculture project, it is considered important to determine the frequency and time duration it is expected that the pond water depth will be below 1.5m.

River water will be pumped from the proposed weir pondage to supply the pond. This will be subject to a water allocation licence and initial discussions with the relevant authority suggest that the pumping of water is expected to be limited by the following pumping rules, based on flows at the weir site:

  • No pumping is allowed at Upper Caboolture River discharges of less than 200 ML/d
  • For Upper Caboolture River discharges exceeding 200 ML/d, the maximum water extraction shall be 10 ML/day.

The water balance analysis should be performed at a daily timestep and account for the following components:

  • Upper Caboolture River streamflows into the proposed weir. These shall be computed using the ‘cut-down’ AWBM described in Module 8. The pumped water from the weir to the pond can then be directly computed from these streamflow estimates based on the pumping rules listed above.
  • Evaporation from the pond surface. This water loss can be computed using daily pan evaporation data adjusted by an appropriate coefficient.
  • Direct rainfall onto the pond surface. The pond has no land catchment and thus local runoff draining into the pond can be ignored.
  • Seepage from the pond bed. Testing of the existing pond site indicates that a seepage loss equivalent to 0.002 m/day is expected to occur. The effect of this water loss is of concern and your analysis should factor in seepage in the pond water balance.
  • To simplify the computations, base the evaporation, direct rainfall and seepage estimates on the base area of the pond.
  • Pumping to the pond will cease when the full pond capacity is reached.
  • For the purpose of the feasibility assessment, provide an analysis of the pond with no topping up.

Hydrological data is available for the 5 year period from 1/3/2017 to 1/03/2022. A water balance analysis would normally be carried out over a longer timeframe, but has been reduced for the purpose of this assignment. The water balance should be performed in an EXCEL spreadsheet to determine the following measures of pond conditions during the 5- year simulation period:

  1. The number of separate occasions that the pond water depth would be critically low
  2. The average annual period of time that the pond water depth would be critically low (in days/yr)
  3. The average annual loss of water due to evaporation and seepage (in ML/yr)
  4. The average annual pumped extraction of water from the weir (in ML/yr) Useful materials for water balance analysis
  • The average pan evaporation data is provided below in Table-2. You can consider a constant daily evaporation rate for all the days in a month. A pan coefficient of 0.8 is applicable.

Table 2: Pan Evaporation data (mm/day)

MonthPan Evaporation (mm/day)MonthPan Evaporation (mm/day)

4. Submission

Your submission for Assignment 2 should include:

  • A detailed report that documents all the tasks required as part of the Assignment-1. A marking scheme is provided as Table 3. Use this marking scheme to check that you have addressed the full scope of the work. If an element of the assignment has not been documented in the file report than no marks will be given for that element.
  • An Excel sheet with all the calculations shall be submitted. Electronic submission of the report and excel sheet should be through the study desk.
    • Part of the available marks has been allocated to reward reporting that is well set out and easy to follow. Submissions that are untidy and/or poorly structured and thus difficult to assess will attract less marks for this element.

The following filename convention shall be used: YourName_Ass1.pdf and YourName_Ass1.xlsx,where Your Name is your first and last names.

Penalties for late assignment submission:

If an Assignment is submitted after the published deadline without an approved extension of time, the maximum Mark will be reduced as a consequence. In this case, the available Mark is reduced by 5% (of the original available Mark) for each Calendar Day or part day that the Assignment is late.

An Assignment submitted more than one (1) week after the due date will have a Mark of zero recorded.

For students with an approved extension, a zero Mark will be awarded for an Assessment Item if it is submitted after an approved extension date.

Table 3: Assignment 2 Marking Scheme

Assignment elementTotal
Part-1 Reservoir routing 
Lookup table based on elevation-storage and elevation-discharge relationships15
Correct setup of reservoir routing spreadsheet20
Calculated and plotted hydrographs10
Determination of changes to peak discharge and inundation time5
Part 2 Minor and Major Design Discharges 
Design assumptions and output summary 
Catchment plan showing subcatchment boundaries and flowpaths10
Table of pit subcatchment details5
Table of 2 year and 100 year ARI rainfalls5
Table of runoff coefficients5
Izzard table and hydraulic capacity charts5
Output summary table5
Suggestions for revisions to proposed drainage5
Sheet 1 and worked calculation 
Appropriate time of concentration estimates (Col 1 to 8)5
Full area CA values and Rational Q estimates (Col 9 to 14)5
Partial area CA values and Rational Q estimates (Col 9 to 14)5
Pit inlet analysis and road hazard (Col 15 to 25)5
Sheet 1 worked calculation5
Sheet 2 and worked calculation 
Full area calculations (Col 1 to 5)5
Partial area calculations (Col 6 to 11)5
Sheet 2 worked calculation5
Sheet 3 and worked calculation 
Appropriate time of concentration estimates (Col 1 to 8)5
Road Q and capacity check (Col 9 to 18)10
Sheet 3 worked calculation5
Part 3: Water Balance Analysis 
Selection of AWBM parameters and catchment data15
Computation of runoff using cut-down AWBM for full simulation period20
All water balance components taken into account and modelled20
Computation of pond water balance for full simulation period15
Computation of measures of pond conditions10
Assignment report10
Assignment EXCEL spreadsheet10
Order Now

Get expert help for ENV3105 Hydrology Assignment 2 and many more. 24X7 help, plag free solution. Order online now!

Universal Assignment (December 5, 2022) ENV3105 Hydrology Assignment 2. Retrieved from https://universalassignment.com/env3105-hydrology-assignment-2/.
"ENV3105 Hydrology Assignment 2." Universal Assignment - December 5, 2022, https://universalassignment.com/env3105-hydrology-assignment-2/
Universal Assignment September 30, 2022 ENV3105 Hydrology Assignment 2., viewed December 5, 2022,<https://universalassignment.com/env3105-hydrology-assignment-2/>
Universal Assignment - ENV3105 Hydrology Assignment 2. [Internet]. [Accessed December 5, 2022]. Available from: https://universalassignment.com/env3105-hydrology-assignment-2/
"ENV3105 Hydrology Assignment 2." Universal Assignment - Accessed December 5, 2022. https://universalassignment.com/env3105-hydrology-assignment-2/
"ENV3105 Hydrology Assignment 2." Universal Assignment [Online]. Available: https://universalassignment.com/env3105-hydrology-assignment-2/. [Accessed: December 5, 2022]

Please note along with our service, we will provide you with the following deliverables:

Please do not hesitate to put forward any queries regarding the service provision.

We look forward to having you on board with us.

Universal Assignment

Get 45%* OFF on Assignment Help

Most Frequent Questions & Answers

Universal Assignment Services is the best place to get help in your all kind of assignment help. We have 172+ experts available, who can help you to get HD+ grades. We also provide Free Plag report, Free Revisions We offer Best Price in the industry guaranteed.

We provide all kinds of assignmednt help, Report writing, Essay Writing, Dissertations, Thesis writing, Research Proposal, Research Report, Home work help, Question Answers help, Case studies, mathematical and Statistical tasks, Website development, Android application, Resume/CV writing, SOP(Statement of Purpose) Writing, Blog/Article, Poster making and so on.

We are available round the clock, 24X7, 365 days. You can appach us to our Whatsapp number +1 (613)778 8542 or email to info@universalassignment.com . We provide Free revision policy, if you need and revisions to be done on the task, we will do the same for you as soon as possible.

We provide services mainly to all major institutes and Universities in Australia, Canada, China, Malaysia, India, South Africa, New Zealand, Singapore, the United Arab Emirates, the United Kingdom, and the United States.

We provide lucrative discounts from 28% to 70% as per the wordcount, Technicality, Deadline and the number of your previous assignments done with us.

After your assignment request our team will check and update you the best suitable service for you alongwith the charges for the task. After confirmation and payment team will start the work and provide the task as per the deadline.

Yes, we will provide Plagirism free task and a free turnitin report along with the task without any extra cost.

No, if the main requirement is same, you don’t have to pay any additional amount. But it there is a additional requirement, then you have to pay the balance amount in order to get the revised solution.

The Fees are as minimum as $10 per page(1 page=250 words) and in case of a big task, we provide huge discounts.

We accept all the major Credit and Debit Cards for the payment. We do accept Paypal also.

Popular Assignments

SEM721 – Engineering Design

Assessment task 1: Individual concept proposal Task description: You are required to submit an individual concept proposal to the challenge proposed by the unit stakeholders. This submission is a compilation of creative outputs generated over the first five weeks of the unit and encompassing the supporting unit site activities associated

Read More »

Research Methods and Analysis

 Assessment Brief Module name:                        Research Methods and Analysis  Module code:                         4PS512Trimester:                                T1 Autumn/2022-2023      Module learning outcomes On successful completion of this assessment and this module, you will have demonstrated your ability to: 1. Identify the purpose and principles of psychological research. 2. Design simple psychological studies that

Read More »

Explore the influence of a variety of Human factors

Objectives  Key Words Example 1 1.2. Aims and Objectives The aim of this study is to explore the influence of a variety of human factors in the changing office environment within the UK, with particular reference to the impact of innovation. Research Objectives: – To identify and examine the ‘human

Read More »

A Hybrid Mechanism to integrate Facilities Management

Research Title: A Hybrid Mechanism to integrate Facilities Management (maintenance management and Asset management/space design and planning) into Building Design of Schools or Hospitals in Nigeria using BIM. Case Study could be either Schools or Hospitals while the Facilities Management aspects should focus on at least two of the core

Read More »

Management Practice BSS063-6

Submission Deadline Marks and Feedback Before 10am on: 9th of December 2022 20 working days after deadline (L4, 5 and 7)15 working days after deadline (L6)10 working days after deadline (block delivery)   Unit title & code Management Practice BSS063-6 Assignment number and title 1. Report on Simulation Assignment type

Read More »

Financial Analytics for Managerial Decisions

Teaching Period – 6, 2022 Assessment – 3 Case-Study ASSESSMENT DETAILS Course Code:  BUSM 4741 Course Description: Financial Analytics for Managerial Decisions Date Due: 8/12/2022 11:59 pm (Melbourne) Total number of pages (incl. this cover sheet): 18 ALLOWABLE MATERIALS AND INSTRUCTIONS TO CANDIDATES   You should download the Case Study in

Read More »

The easiest way to get top-quality 24X7 Java Homework Help

Develop your programming skills with Java Homework Help You can visit Universal Assignment’s website to order quick Java homework. Here, you will find amazing programming language assignment helpacross all levels. They have a special team of experts to help you with Java projects and homework. By ordering help, you can

Read More »

How can I hire top assignment help experts?

Before you hire assignment help experts, keep these in mind: First of all, we must understand why assignment help experts are necessary for our academics. While we all have great mentors at school, sometimes we cannot get 100% assistance from them. This happens because of a lack of time or

Read More »

Model Reconstruction, Mold Design & Validation using Siemens NX

CAD/CAM Assignment 1: Model Reconstruction, Mold Design & Validation using Siemens NX Deadline: 06/12/2022 Requirement document: Total section in assignment is 2. ·        Model Reconstruction, Mold Design & Validation Report should be very detailed and clearly presented with a table of content, abstract, introduction to the design task, detailed model

Read More »

Assessment 1: Five bi-weekly quizzes

Print There are five assessment quizzes and each quiz occupies 4% of the total mark for this unit.  You have only one chance to attempt each assessment quiz.  Download 0 %0 of 7 topics complete Show data table for This chart displays the number of completed topics versus the total

Read More »

Effective University Assignment Help for All Subjects!

Studying better with university assignment help Do you need university assignment help? While university life is a challenging experience, there are many ways to make things easier. One of these is to seek university assignment assistance. As you know, there are endless amounts of tasks that you need to submit.

Read More »

Best MBA Assignment Help for Instant High Scores

Why do students demand MBA Assignment help? On a global scale, students increasingly require MBA assignment help. MBA is a degree to train students to manage a corporate business. MBA stands for Master of Business Administration. As we know, MBA is a degree that can open up unlimited job opportunities.

Read More »

Can I pay someone to write my research paper fast?

How to pay someone to write my research paper?  It is extremely easy to pay someone to write your research paper online! You just need to find the perfect writer. It is even better if you find a student assistance website that has the proper experience. All you need to

Read More »

ENT11107 – Managing Innovation

ASSESSMENT BRIEF (AY 2022/2023) The assessment of this module comprises of two components: Component 1 – 30% The first component consists in a group presentation to be recorded and submitted in Week 9. You will work in group with 4/5 students. Each team will be required to ideate an innovative

Read More »

Get Instant Cheap Assignment Help for All Subjects to Secure A+

Effective and Cheap Assignment Help Students widely search for affordable assignment help. Academics is stressful and demands a lot of your time. At the same time, you need to take assignments seriously. Therefore, experts suggest that students opt for online assignment help to excel at school. Most students need cheap

Read More »

Keep up 100% Academic Integrity with Safe Assign Blackboard

How does safe assign blackboard work? A safe assign blackboard is a plagiarism-detecting tool. It compares written documents to check replications and unoriginal content. This works through many internet-driven technologies. If you upload your academic assignment, the tool will detect if there is any unoriginal content. So, you can correct

Read More »

Where to find the best assignment help in 2023?

Locating the best assignment help is very simple! The best assignment help is available round-the-clock at Universal Assignment Help Service. The best part about this is that you can opt for ANY subject! You will find instant expert assistance for any assignment for science, arts, commerce, law, and many others.

Read More »

Will Experts Help Me with My Homework?

How can I find experts to help me with my homework? There are many ways to find homework help online. Most of all, it is important to find a service provider that you can trust. Students have to think before spending their money, so the money spent on homework help

Read More »

Philosophy 1150 Fall 2022

Assignment 2 Instructions: Answer all of the following questions. Type up your answers and/or write up and photograph your answers, compile them all into one document or pdf, and submit them to Moodle. This assignment is due on November 30th, by 11:59 PM. No late submissions will be accepted. Total

Read More »

MCD4140 ASSIGNMENT – T3 2022

Due: 11:55PM, Monday, December 19, 2022 (Week 10) Late submissions: A 10% penalty (-1 mark) per day, or part thereof, will be applied. No submissions will be accepted once the penalty has reached 50%. LEARNING OUTCOMES PLAGIARISM & COLLUSION This assignment is to be completed INDIVIDUALLY. Students are advised to

Read More »

KF7006 Object Oriented Programming

ASSESSMENT BRIEF Module Title: Object Oriented Programming Module Code: KF7006 Academic Year / Semester: 2022-23 / Semester 1 Module Tutor / Email (all queries): Lauren Scott / lauren5.scott@northumbria.ac.uk % Weighting (to overall module): 100% Assessment Title: Nonogram Date of Handout to Students: 14th November 2022 Mechanism for Handout: Module Blackboard

Read More »

MSc Research Project

MSc Research Project Programme Name Forename Surname Student ID: XXX School of Computing National College of Ireland Supervisor:       XXX National College of Ireland MSc Project Submission Sheet School of Computing   Student Name:   ……. ……………………………………………………………………………………………………………   Student ID:   ……………………………………………………………………………………………………………..……   Programme:   ………………………………………………………………   Year:   …………………………..  

Read More »

ADS103 Algorithms and Data Structures

ASSESSMENT 3 BRIEF Subject Code and Title ADS103 Algorithms and Data Structures Assessment Integrated Programming Assignment 3 Individual/Group Individual Length 2 source code solutions to programming problems Learning Outcomes The Subject Learning Outcomes demonstrated by successful completion of the task below include:     Identify and utilise appropriate algorithms to

Read More »

Business Model Analysis

This activity is comprised of two practical skills tasks that you will undertake to demonstrate your ability to: PART A – Business Model Prepare a business model using the Business Model Canvas. You may use an actual business or a simulated business. SIMULATED CASE STUDY Simulated situations could involve: OR

Read More »

Assignment 4 : Spark Structured API

INSTRUCTIONS In the lecture on Spark Structured API, we did not specify the schema of our dataset. We relied on the inference of Spark engine which generally loads data as Strings. We can create a schema by using an object of a class called StructType consisting of an array of

Read More »

Analog Transmission Assignment Help

Electronics engineering has become one of the favorite engineering branches for aspiring engineers. The high preference for this stream is due to the high useability of digital and analog devices. These electrical devices have connections among themselves. Both are useful for serving the complete purpose that users would like to

Read More »

Can't Find Your Assignment?

Open chat
Free Assistance
Universal Assignment
Hello 👋
How can we help you?